Zircarsite

Na18Cu12ZrO8(AsO4)8Cl6
IMA status
  • Approved
  • Pending publication
IMA symbol
Zca
Also known as
  • Zircarsiet

Where it forms, where it's found

Type locality
Arsenatnaya fumarole
  1. Second scoria cone
  2. Northern Breakthrough (North Breach)
  3. Great Fissure eruption (Main Fracture)
  4. Tolbachik Volcanic field
  5. Milkovsky District
  6. Kamchatka Krai
  7. Russia

55.6833°, 160.2333°

1recorded occurrences
Source · OpenStreetMap

Safety & handling

Crystallography

Crystal system
Isometric
Space group
Pm-3m
Cell parameters
a = 21.3341(5) Å
Morphology

Cubic: Pm; structure determined a=21.3341(5) Å

Comment

Space group Pm-3n

Chemical composition

Constituent elements
Mass composition breakdown
ElementAtoms At. mass g/mol Mass g/molMass share
29CuCopperCopper1263.546762.552
28.04%
8OOxygenOxygen4015.999639.960
23.53%
33AsArsenicArsenic874.922599.376
22.04%
11NaSodiumSodium1822.990413.820
15.22%
17ClChlorineChlorine635.450212.700
7.82%
40ZrZirconiumZirconium191.22491.224
3.35%
Total2719.632100.00%

Mass share = atoms × atomic mass ÷ molar mass × 100

From Mindat formula

Synonyms

  • Zircarsiet

In other languages

German
IMA 2024-037 · Zircarsit

Classification

Strunz
10th ed.

8.BK.35

  • 8Phosphates, Arsenates, VanadatesClass
  • 8.BPhosphates, etc., with additional anions, without H2ODivision
  • 8.BKWith medium-sized and large cations, (OH, etc.):RO4 = 2:1, 2.5:1Group
  • 8.BK.35ZircarsiteSpecies

Literature, links & citation

Citations
  1. Koshlyakova, N. N., Pekov, I. V., Agakhanov, A. A., Burns, P. C., Bullock, E., Yapaskurt, V. O., Zubkova, N. V., Britvin, S. N., Hazen, R. M., and Zhitova, E. S.: Zircarsite, IMA 2024-037, in: CNMNC Newsletter 81, Eur. J. Mineral., 36, https://doi.org/10.5194/ejm-36-917-2024, 2024.
Cite this entry
@misc{mineral2026,
  author    = {Mineral Index editorial board},
  title     = {Zircarsite — Mineral Index},
  year      = {2026},
  url       = {https://mineralindex.org/minerals/zircarsite-471417},
  note      = {Accessed 2026-05-11}
}